/Engine/Source/Runtime/Core/Public/Math/UnrealMathUtility.h
Interpolate float from Current to Target. Scaled by distance to Target, so it has a strong start speed and ease out.
template<typename T1, typename T2, typename T3, typename T4> static auto FInterpTo ( T1 Current, T2 Target, T3 DeltaTime, T4 InterpSpeed )